Firstov.com

I've installed a couple of Drupal modules on the site including Feedback, users guestbooks, invite and my buddylist. It seems with the modules help, Drupal based site has all functionality one could think of. However I could not find a good voting solution (a la digg.com) for Drupal. In fact in version 4.6 it had comments voting already built-in, but later it was removed from the core.
I'd love to see Drupal getting more functionality built-in to the core, as this way it's easier to maintain for webmaster.
Another problem with Drupal I could not resolve is related to the PathAuto module. It creates a table of nice URLs and their corresponding /node based URLs, and for each web request it scans this table to display nicely formatted URL...
It works great for the small to medium (a couple of thousands pages) web sites, but eventually when using shared web hosting it is going to load up the database up to a level when the site stops functioning.
I've read, however Drupal 5 is going to solve database problem by providing a core mechanism to cache pages using the file system vs caching using the same database which would help a lot when the database is hogged, but still this does not solve the URL problem.